Perhaps you should try some spelling variations:
decrease tanning » decreased running (Expand search), decrease walking (Expand search), decreases handling (Expand search)
tanning process » training process (Expand search), planning process (Expand search), turning process (Expand search)
decreased rate » increased rate (Expand search), decreased base (Expand search), decreased native (Expand search)
rate decrease » rats decreases (Expand search), rate increase (Expand search), to decrease (Expand search)
decrease at » decrease akt (Expand search), decrease and (Expand search), decrease in (Expand search)
at decrease » that decrease (Expand search), and decrease (Expand search), not decrease (Expand search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decreased rate decrease tanning process ) OR ( decrease at decrease NOT decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decreased rate decrease tanning process ) OR ( decrease at decrease NOT decrease ))*.